Cost and Profit Centers: Classification and Costing Methods
Cost and Profit Centers
Definitions
A profit centre is a business segment responsible for both revenue and expenses, disclosing the profit of a particular activity. Profit centres are created to delegate responsibility to individuals and measure their performance.
A cost centre is the smallest unit of activity or area of responsibility for which costs are collected. Cost centres are created for accounting convenience and cost control.
Key Differences
- Responsibility: Profit centres are responsible for both revenue and expenses, while cost centres are only responsible for costs.
- Autonomy: Profit centres are autonomous, while cost centres are not.
- Targets: Profit centres have profit targets, while cost centres aim to minimize costs.
- Structure: A profit centre may contain multiple cost centres, representing different activities within the profit centre.
Cost Classification Methods
- By Nature or Elements: Materials (raw materials, components, etc.), Labour, and Expenses.
- By Functions: Production costs (manufacturing, construction) and Commercial costs (administration, selling, and distribution).
- By Degree of Traceability: Direct costs (easily traced to a product) and Indirect costs (benefit multiple products).
- By Changes in Activity or Volume: Fixed costs (remain constant in total), Variable costs (vary with output), and Semi-variable costs (partly fixed, partly variable).
- Association with the Product: Product costs (traceable to the product) and Period costs (incurred over time).
- By Controllability: Controllable costs (can be influenced by a specific individual) and Non-controllable costs.
- By Normality: Normal costs (typically incurred) and Abnormal costs (incurred under unusual circumstances).
- By Relationship with Accounting Period: Capital costs (incurred for long-term assets) and Revenue expenses (incurred for ongoing operations).
- By Time: Historical costs (recorded after being incurred) and Predetermined costs (estimated in advance).
Principal Costing Methods
- Job Costing: Costs are ascertained for specific, non-comparable jobs (e.g., printing, auto repair). Includes:
- Contract Costing (large-scale contracts)
- Batch Costing (similar products treated as one job)
- Terminal Costing (cost terminated at a specific point)
- Operation Costing (cost of a specific operation)
- Process Costing: Costs are tracked through distinct production stages (e.g., textiles, chemicals).
- Unit Costing: Cost per unit is calculated for continuous manufacturing of a single product (e.g., bricks, cement).
- Operating Costing: Cost per unit of service is calculated (e.g., transport, utilities).
- Multiple Costing: Combines different costing methods for complex products (e.g., cars, airplanes).
- Uniform Costing: A common costing system used within an industry for comparison.
- Departmental Costing: Costs are ascertained department by department.
Costing Terms
- Direct Materials: Easily identifiable and measurable materials directly used in the product.
- Indirect Materials: Materials that cannot be directly traced to the product (e.g., consumables).
- Direct Labour: Labour directly involved in altering the product.
- Direct Expenses: Expenses directly attributable to a specific cost centre.
- Overheads: Indirect costs, including indirect materials, labour, and other expenses (manufacturing, administration, selling, distribution, R&D).